It is extremely hard to identify patterns or conditions that would offer 100% success rate.The better approach would be to identify some patterns, define their success rate and then use or create a system (progression) that can deal with this success rate.

ExampleIdentify a condition:IF(A) a color has appeared 2 times or less in 10 spinsTHEN(B) it will appear at least once in the next 3 spins

We can never have 100% certainty, so let's say that (B) happens 90% of the time (9/10 success rate)

Now we have to devise the appropriate betting plan to overcome any losses.

Systems for small run sessions has the feature and the certainty it can give a profit or a loss.The triangel of Blaise Pascal is a very useful tool for the even chances. See my explanation in other threads of this forum.

Keep it tight when switching.A switch from black to red is as valid as a switch from red to black, but for your example let’s stick with a switch to black.

Chart a row for red and a row for black:

R B

After each spin put an X under R or B:

R BX X

Continue to put an X under R or B until R has 4X’s and B has 3 or less X’s:

R BX XX XXX

From here, each time red shows put an X under R and strike out the first X for R & B. This way there will only ever be 4X’s under R:

R BX XX XX XX

Continue to put an X under R or B striking out the first rows each time red shows until B catches up and they both have 4 X's:

R BX XX XX XX XX XX XX X

Now that both R & B are equal with 4 X’s strike out the first row:

R BX XX XX XX X

If black shows next we have the switch and each time black has 4 X’s while red has 3 or less we can bet on black.

R BX XX XX X X

From here, each time black shows put an X under B and strike out the first X for R & B. This way there will only ever be 4X’s under B and we can continue to bet black until red catches up which could result in a switch to red if you want.

R BX XX XX XX X X

This is a simple bet/switch formula that can be a very effective foundation for an EC system.Of course you can add in all the EC’s for more action and complexity. In fact I recommend it because when tracking all the EC's this method can really pin point a strong dominance.

You could play around with the length of the rows, but from my research this length is ideal.